Low-emitting Facility General Permit

The MPCA is no longer accepting applications for Part 70 Low-emitting Facility (LEF) General Permits. The LEF Permit will expire on April 30, 2020. Because of the rescission of “Once in Always in” and the promulgation of additional conditionally exempt source categories in Minnesota Rules Chapter 7008, the MPCA does not plan to replace the LEF permit. Current LEF general permit holders will be required to apply for a new permit or become a conditionally exempt source by November 2, 2019; permittees may still continue to operate their facility after the expiration date of the permit, as long as they have applied for a replacement option by Nov. 2.

We expect most current LEF holders to be eligible for one of the following:

If you have any questions please contact Beckie Olson @ 651-757-2123.

The Part 70 Low-emitting Facility (LEF) General Permit is primarily intended for businesses with high potential emissions and low actual emissions that began operating without an air permit. Examples of businesses that are likely to apply are auto-body shops, metal fabrication facilities, cabinet shops, other businesses that coat or paint, and facilities that have engines, boilers or tanks on site. However, anyone can apply. Target facilities may have:

  • constructed a major source under the New Source Review (NSR) program and/or;
  • constructed and operated a major source of hazardous air pollutants.

If a facility has potential emissions that exceed major source thresholds for either program, they will likely be:

  • subject to BACT-equivalent requirements;
  • subject to major source NESHAPs; and
  • unlikely to qualify for a Registration Permit.

The Low-emitting Facility permit includes BACT-equivalent requirements, and major and area source NESHAPs.

Low-emitting Facility general permits that have been issued

The table below contains information for current LEF general permit holders. Due to the length of this permit only the first two pages are included for each facility. The full permit document and TSD can be accessed in the permit documents section below.

Facility name


SIC code

Permit number

Effective date

Master Composites Inc.

Henning; Otter Tail


PDF icon 11100085-001


Jordan Transformer Jordan; Scott 3612 PDF icon 13900123-001 6/3/2015
Equipment Rental Company Duluth; St. Louis 3479 PDF icon 13700340-001 6/16/2015
CarMax #6008 Brooklyn Park; Hennepin 5511 PDF icon 05301249-001 9/9/2015
Waterous South St. Paul; Dakota 3491 PDF icon 12300687-005 9/7/2015
LaMettry's Collision Inc. New Brighton; Ramsey 7532 PDF icon 12300773-101 1/20/2016
Pro Line Painting Minneapolis; Hennepin 2431 PDF icon 05300976-101 1/27/2016
Door Engineering and Manufacturing Kasota; Le Sueur 3442 PDF icon 07900054-101 11/28/2016
ColorWare Inc. Winona; Winona 3479 PDF icon 16900094-101 2/10/2016
Mickelson Body Shop Hawley; Clay 7532 PDF icon 02700074-101 5/11/2016
Power Mountain Hydraulics Mountain Lake; Cottonwood 3593 PDF icon 03300031-101 11/3/2016
Pro Blast Technology, Inc Keewatin; Itasca 3479 PDF icon 06100080-101 11/29/2016
A-Cab Custom Woodworking Inc. St. Joseph; Stearns 2434 PDF icon 14500187-101 12/1/2016
Hoglund Body & Equipment Monticello; Wright 7532 PDF icon 17100102-101 12/6/2016
JJ's Industrial Painting Inc. Ham Lake; Anoka 3479 PDF icon 00300256-101 1/10/2017
Minnesota Corrugated Box Inc Albert Lea; Freeborn 2657 PDF icon 04700066-101 1/26/2017
Molex – Savage Savage; Scott 3679 PDF icon 13900132-101 2/3/2017
Minnesota Power – Herbert Service Center Duluth; St. Louis 4931 PDF icon 13700346-101 5/16/2017
Minnesota Power – Little Falls Service Center Little Falls; Morrison 4931 PDF icon 09700046-101 5/16/2017
Hansen & Company Woodworks Inc. St. Joseph; Stearns 2434 PDF icon 14500187-102 5/25/2017
Custom One Paint, Inc. Minneapolis; Hennepin 1721 PDF icon 05301260-101 6/26/2017
Scott Equipment Co. Arlington; Sibley 3499 PDF icon 14300023-101 7/11/2017
ABRA Auto Body & Glass – Princeton Princeton; Sherburne 7532 PDF icon 14100073-101 7/24/2017
States Electric Manufacturing Corp. Minneapolis; Hennepin 3613 PDF icon 05301262-101 7/27/2017
Hydrostat Inc Rice; Benton 7699 PDF icon 00900054-101 10/25/2018
Paragon Store Fixtures Big Lake; Sherburne 2541 PDF icon 14100078-101 12/13/2018
Coloplast Corporation North Mankato; Nicollet 2834 PDF icon 10300043-101 12/18/2018

Frequently asked questions

  • Its flexibility allows you to make changes and modifications at your facility easily
  • It’s less expensive than an individual permit
  • It includes a range of commonly applicable federal requirements
  • It accommodates a wide range of industry types

The Part 70 Low-emitting Facility General Permit is primarily intended for businesses with high potential emissions and low actual emissions that began operating without an air permit. Examples of businesses that are likely to apply are auto-body shops, metal fabrication facilities, cabinet shops, other businesses that coat or paint, and facilities that have engines, boilers, or tanks on site. However, anyone who meets the qualifications can apply.

If you started operating a facility without a permit and your potential to emit is above certain thresholds, you no longer qualify for a Registration Permit. Here’s why: Once you have begun operation you are stuck with using your maximum, unrestricted potential to emit to define what type of permit you must get. Potential to emit is the maximum amount of a pollutant that a facility could possibly emit if it operated at maximum capacity for 24 hours a day and 365 days a year.

If your facility has a potential to emit over the Prevention of Significant Deteriorations threshold for any individual criteria pollutant (100 or 250 tons per year depending on your source category) and you did not get a permit before starting operation, then you are required to get a Part 70 permit that contains emission limits that are equivalent to Best Available Control Technology (BACT) limits. These are referred to as BACT-equivalent limits. The Low-Emitting Facility Permit contains the limits that fulfill this requirement. If your facility qualifies for the Low-emitting Facility Permit, then that saves you the time and money that it usually takes to decide what these limits should be for your specific facility.

If your facility is over the threshold of 10 tons per year for an individual hazardous air pollutant or 25 tons per year for the total amount of hazardous air pollutants, then you must comply with any National Emission Standard for Hazardous Air Pollutants (NESHAP) that applies to you, and you are required to get a Part 70 permit. The Low-Emitting Facility Permit is a type of Part 70 permit, and it contains NESHAPs that are common to coating and combustion operations.

Yes, anyone can apply. However, the Low-emitting Facility General Permit is intended for existing facilities that have been operating without a permit and have very low actual emissions. If you apply for this permit you must be able to stay under the limits of the permit. You will have to apply for an individual permit if you ever need to increase your emissions beyond the limits of the Low-Emitting Facility Permit.

If you are applying for a permit for construction of a new facility that will have low actual emissions, and construction has not yet started, there are other permit options that may be more appropriate, such as a Registration Permit.

Yes, this permit will expire after five years. Since this is a General Permit, the five year time period will begin when the first permit is issued. This means that everyone who receives this permit will have the same expiration date for their permit. You will have to apply for the next generation of the general permit 180 days before the expiration date.

As long as you apply for the next version of the general permit on time, then your current permit will continue to be valid until the MPCA issues you a new permit. An application fee for a General Permit (currently $1,140) is required.

The main reasons to apply for this permit are to save time and money. The process of applying for a Part 70 Individual permit is time-consuming for everyone because an individual permit is tailored for your specific facility. Additional time is necessary if Federal BACT-equivalent limits or NESHAP requirements must be included. In comparison, the Low-Emitting Facility Permit is pre-written to cover a range of operating scenarios and applicable Federal requirements, which streamlines the process. The time savings are reflected in the cost of the permit. The table below compares the Low-Emitting Facility Permit fees with two types of Part 70 Individual Permits.

Permit Type Part 70 Low-Emitting Facility General Permit Part 70 Individual Permit, major for PSD (requires BACT review), with two NSPS Reviews Part 70 Individual Permit, major for HAPs with a NSPS and a NESHAP
Application Fee $1,140 $21,375 $21,375
NSPS or NESHAP $0 $5,700 $5,700
Limits to Remain Below a Threshold $0 $2,850 $2,850
BACT-equivalent review $0 $12,825 $0
TOTAL FEES $1,140 $47,750 $29,925


Furthermore, with the Low-Emitting Facility Permit facilities can make changes and modifications without applying for a permit amendment, as long as they continue to comply with the limits and requirements of the permit.

The best way to answer these questions is to read over the application forms on this website starting with the Handbook and Application Instructions. The forms will guide you through a series of questions that will help you determine if you qualify for this permit.

Additional information is available at the links below; The MPCA resources listed below can provide some assistance in filling out these forms. If you need further assistance, you may need to contact a consultant.

Permit documents

A link to electronic versions of the permit and the technical support document are provided below. Please be aware that the general permit is designed to be flexible. It incorporates requirements for a wide range of operations, and allows a Permittee to make changes to their facility without requesting a modification to the permit. This flexibility results in a lengthy permit.

Because of the permit length, and because it is unlikely that all of the permit content will apply to your facility, a link to a Word document that you can download, edit and use as a tool for compliance is also provided. The Word document contains an index to help you navigate through the permit by holding the CONTROL key, and clicking on the section you want to see.

You could use this document by deleting sections that you know do not apply to you, to make it easier to follow the requirements that do apply. Note that this is not your official permit. If you make any changes to your facility and think that other portions of the permit might apply, then you must refer to the official (entire) document.

The following are sections of the final permit. The purpose of providing the permit in this format is to enable users to access the permit in manageable parts, and to more easily disregard those sections of the permit that may not be applicable to a given facility.

Application handbook and forms

Compliance forms

Completeness review

Your application will be reviewed for completeness by MPCA staff using the form below. You can use this form to review your own application, but do not include the form with your application submissions.

Microsoft Office document icon Part 70 LEF General Permit Application Review (aq-f0-acc06) (revised 7/17/18)

MPCA resources for calculating emissions

See the MPCA Emission Calculations webpage for detailed information.